Slum-dwellers usually have no legal right to get municipal services. They are generally treated as polluters of the city environment. The composting approach in the slums and squatter settlements indicated that low income communities are not the cause of environmental degradation of cities but they can maintain a clean and liveable environment if they get external support. The composting projects in slums of Dhaka City are promoted by donor agencies and there is limited scope for the community to build capacity (both management and financial) to run them independently in future. This paper discusses ‘how sustainable are the projects if the external support is withdrawn?’ through some indicators such as community motivation and attitude, acceptability, ownership, and contribution.